A(std::nullptr_t) {}
};
+template <class T>
+void test_conversions()
+{
+ {
+ T p = 0;
+ assert(p == nullptr);
+ }
+ {
+ T p = nullptr;
+ assert(p == nullptr);
+ assert(nullptr == p);
+ assert(!(p != nullptr));
+ assert(!(nullptr != p));
+ }
+}
+
+template <class T>
+void test_comparisons()
+{
+ T p = nullptr;
+ assert(p == nullptr);
+ assert(p <= nullptr);
+ assert(p >= nullptr);
+ assert(!(p != nullptr));
+ assert(!(p < nullptr));
+ assert(!(p > nullptr));
+ assert(nullptr == p);
+ assert(nullptr <= p);
+ assert(nullptr >= p);
+ assert(!(nullptr != p));
+ assert(!(nullptr < p));
+ assert(!(nullptr > p));
+}
+
+
int main()
{
static_assert(sizeof(std::nullptr_t) == sizeof(void*),
"sizeof(std::nullptr_t) == sizeof(void*)");
- A* p = 0;
- assert(p == nullptr);
- void (A::*pmf)() = 0;
-#ifdef __clang__
- // GCC 4.2 can't handle this
- assert(pmf == nullptr);
-#endif
- int A::*pmd = 0;
- assert(pmd == nullptr);
- A a1(nullptr);
- A a2(0);
- bool b = nullptr;
- assert(!b);
- assert(nullptr == nullptr);
- assert(nullptr <= nullptr);
- assert(nullptr >= nullptr);
- assert(!(nullptr != nullptr));
- assert(!(nullptr < nullptr));
- assert(!(nullptr > nullptr));
- A* a = nullptr;
- assert(a == nullptr);
- assert(a <= nullptr);
- assert(a >= nullptr);
- assert(!(a != nullptr));
- assert(!(a < nullptr));
- assert(!(a > nullptr));
- assert(nullptr == a);
- assert(nullptr <= a);
- assert(nullptr >= a);
- assert(!(nullptr != a));
- assert(!(nullptr < a));
- assert(!(nullptr > a));
- std::ptrdiff_t i = reinterpret_cast<std::ptrdiff_t>(nullptr);
- assert(i == 0);
+
+ {
+ test_conversions<std::nullptr_t>();
+ test_conversions<void*>();
+ test_conversions<A*>();
+ test_conversions<void(*)()>();
+ test_conversions<void(A::*)()>();
+ test_conversions<int A::*>();
+ }
+ {
+ test_comparisons<std::nullptr_t>();
+ test_comparisons<void*>();
+ test_comparisons<A*>();
+ test_comparisons<void(*)()>();
+ }
+ {
+ bool b = nullptr;
+ assert(!b);
+ }
}
--- /dev/null
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// typedef decltype(nullptr) nullptr_t;
+
+#include <cstddef>
+
+int main()
+{
+ std::ptrdiff_t i = static_cast<std::ptrdiff_t>(nullptr);
+}
--- /dev/null
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// NOTE: nullptr_t emulation cannot handle a reinterpret_cast to an
+// integral type
+// XFAIL: c++98, c++03
+
+// typedef decltype(nullptr) nullptr_t;
+
+
+#include <cstddef>
+#include <cassert>
+
+int main()
+{
+ std::ptrdiff_t i = reinterpret_cast<std::ptrdiff_t>(nullptr);
+ assert(i == 0);
+}